Type-writing machine.



M. W, POOL. TYPE wmim MACHINE. APPLIOATION FILED NOV. 26, 1906.

Patented Feb. 9, 1909.

'II/IIIIII;

2 SHEETS-SHEET 1.

1-ll5 TTElFiNEY M. w. POOL. TYPE WRITING MACHINE. APIfLIOATION I'ILED NOV.26, 1906.

Patented Feb. 9, 1909..

2 SHEETS -SHEET 2- IN VENTEIR 1-15 TTERNEY UNITED STATES PATENT OFFICE.

MORRIS W. POOL, OF NEW YORK, N. Y., ASSIGNOR TO UNION TYPEWRITER COMPANY, OF

JERSEY'GITY, NEW JERSEY, A CORPORATION OF'NEW JERSEY.

Specification of Letters'Patent.

E'atented Feb. 9, 1909.

Application filed November 26, 1906. Serial No. 345,079.

borough of Brooklyn, city of New York, in

the county of Kings and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

My invention relates to ribbon mechanism for writing machines and has for its object to provide improved means for varying the widthwise portion of the ribbon whichis exposed to'the. types.

To the above and other ends, the invention consists in the features of construction, combinations of devices and arrangements of parts, hereinafter described and particularly pointed out in the" claims.

The invention is shown as applied to a Monarch typewritingmachine, but it is to be understood that it may be adapted to other forms of writing machines.

In the accompanying drawings,F igure 1 is a vertical longitudinalsectional view of a' typewriting machine embodying my invention, parts of the machine belng omitted.

Fig. 2 is an enlarged side view of a device. hereinafter termed a two-part rlbbon operat-- ing lever. Fig.3 is an enlarged fragmentary perspective View showing the two-part ribbon operating lever. Fig. 4 is an enlarged fragmentary erspective View of a part of the adjusting means for said operating lever and of a bearing of the adjusting means. Fig. 5 is a plan view, partly in horizontal section, of the two-part operating lever, said View also showing a partof the means for adjusting said-lever and part of the means for actuating said lever.. Fig. 6 is a fragmentary frontview of the upper part of the machine embodying my invention, parts of the machine being shown insection and parts being omittcd and broken away. i

In the drawings the main frame of the machine is shown as comprising a base 1, corner posts 2 and a top plate 3. Key leycrs 1 are fulcr in'ned on a fulcrum plate 5 in the rear of the base, eachkeylever being provided with a restoring spring 6 and having pivoted to it at 7a sub-lever 8. [Elie sub-lever is slotted at 9 below its pivot to cooperate with a fixed abutment. 10 and t 1e upper end of said sub-lever is connected by a link 11 with a type bar 12, saidtype bar being pivoted in a hanger 13 secured by a screw 14 to a segmental type bar support 15.

The hangers are arranged on the support 15 in segmental series and the free ends of the type bars are normally supported on a segmental-type rest 16,,said type bars when actuated cooperating with the front face of a rotary platen 17 which is diagrammatically illustrated. .The platen is mounted in a platen carrier or carriage (not shown), the latter being mounted on fixed track-ways and being adapted to be drawn leftward over the top plate by a spring drum 18 which is connected with said carriage by a band or stra 19. The leftward movement of the carriage is controlled by the usual escapement or letter space feedin devices, which devices comprise a pivoted shown), said dog carrier being connected by a link 20 with the central arm 21 of a universal bar frame which also comprises a from-sideto side of the machine beneath tie key levers and when actuated by the latter causing the letter space feeding devicesto coiiperate in the usual way to permit letter space feeding movements of the carriage and platen.

Ribbon spools 24 are arranged horizontally above the top plate, one at'each side of the machine and forwardly of the platen. A ribbon 25 is wound on said ribbon spools ar d passes from one to the other of them in front of the platen. The ribbon shown in the drawings is what is commonly termed a polychrome or bi-color ribbon, bein divided longitudinally: into stripes a and b having different characteristics, such as being difier- Cotiperative with said pinion is a driving pinion 3'1 fixed to a horizontal driving shaft 32, said driving shaft being capable of endwise movement to connect either-one of the dIlVlIlg pmions 31 which it carries with their 0 dog carrier (not rock shaft 22 and a universal bar. proper 23,

the latter extendin ently colored. The usual longitudinal feedturned'n one direction, through the usual usual beveled pinions 33 and 34, the former connected with the spring drum and the latteriwith the driving shaft. 2

Midway between the ribbon spools the ribbon is threaded through a vibrato ribbon carrier or vibrator WlllCl] is or may e of the style employed on some Monarch machines and is designated in the drawings by the numeral 35. slide on the vertical arms 36 of a supporting bracket 37 which is secured by screws 38 to the top plate. The stem of the vibrator is slotted and carries a cross-pin 39 which, as shown in Figs. 1, 3 and 6, coiiperates with the slotted forward end of a lever arm 40, the latter being connected or combined in a manner presently to be described at length with another lever-arm 41 to form a twopart operating lever. The lever arm 41 has a rearwardly projecting perforated ear 42 which receives the upper end of an actuating link 43, the lower end of the latter being connections, said connections comprising the pivotally connected with the lever arm 21 of the universal bar'frame at a fixed distance from the pivotal axis of the latter. which pivotal afiis is coincident with the longitudinal axis of the rock shaft 22.

The two parts 40 and 41 of the operating lever are made adjustable one upon the other in the direction of thelength of said Iever'so that while the fulcrum point of the lever and the points of connection of said lever with other devices between the ribbon and the printing keys may remain unchanged, yet the length of the two-part lever may be varied so as to vary the distance between said unchanging points. Of course,

this idea of a two-part extensible member adjustable to vary its length to alter the widthwise portion of the ribbon to be used may be carried out in various ways. As shown. in the drawings, the extensible memher is the operating lever for the vibrator, said lever having two relatively adjustable arms. As shown especially in Figs. 2-and 3, the forward lever arm 40 is pivoted on a headed screw 44 which is secured in a lug 45 depending from the under side of the top late. The rear portion of the lever arm 40 1s broadened out into a plate-like part 46 so that said lever arm 40 somewhat resembles a T in shape. The end portions of the part 46 are bent over to form grooved guideways 47 which receive and guide parallel arms 48 roiecting forwardly from the ends of the ody portion of the'rear lever arm 41. The

latter. considered as a whole, resembles somewhat a capital .U in sha e. The lever arm 41 is slidable back an forth in the- The vibrator 35 is mounted to plishing this result comprising an inter- 5 posed member or arm 52 which is pivotally connected by a headed screw 53 with the lever arm 40, the screw as shown in Fig. 5

bearin in the arm 40 and serving as a sort of headed lateral bearing lug for the member 52. The interposed member 52 is rovided with two pointed engaging portions 54 and 55 arranged at unequal distances from the center of rotation of said member v 52, each of said engagingportions bein adapted to co'c'perate-with a V-shaped note or opening 56. in the lever arm 41. The member 52 is adapted to be rotated at will and for this purpose is provided with :1 laterally projectin squared lug 57 which is cooperative with and adjusting means pr sently to be described. When the end 55 of the member 52 is o eratively engaged with the notch 56-, the side of the member 52 cooperates with a stop 58 on the part 46 of the forward lever arm, as shown in Figs. 1 and 3. When the member 52 is turned to the osition shown in Fig. 2, a projection 5.) at t e lower side of the notch 56 serves as a stop to arrest further turning movement of the member 52. The turnin movements .of the member 52 are effected by any suitable hand operated device, the one shown in the drawings comprising a spring-pressed key rod 60, mounted in lugs 61 depending from the under side of the top plate, and at its inner end is formed with a head 62 which is provided with a squared depression 63 adapted to co'c'perate with the squared lu' 57 on the member 52. The outer end of the key rod extends through and beyond the right-hand side of the top plate and is provided with a finger button 64. Between the luvs 61 the key rod is surrounded by a coiledspring 65, one end of which-abuts the left-hand lug 61 and the other end of which abuts a collar 66 fixed to the rod by a screw 67 and normally maintained against the right-hand lug 61 by the'spring 65. The

key rod is the invention of Jacob Felbel and is not claimed pm" as by me. In the normal position it will be observe-i the inner end of the key rod is entirely separated from the squared lug or stud 57 so that actuating movements of the two-part operating lever are not interfered with. An angled pin 68 having a pointed or sharpened end is fixed on the key rod 60. and is adapted to coopcrate with openings 69 and 70 (Fig. 4) formed in the inner side face of the lefthand lug 61 and thereby to maintain the key'rod in either of the positions to which it may be turned to adjust the member 52 and set the two parts of the operating lever. The latter is so proportioned that when its two parts are arranged or set as Sl1OW11.1I1 Figs. 1 and 3,- the leveri-will operate when actuated by the link 43' to raise or throw the vibrator far enough to present the lower field b of the ribbon to the types, and

this field w'ill'be used as long as the parts ofthe operating lever are so arranged.

When it is desired to employ the upper field a, the finger button 64 is pressed in,-

wardly to overcome the spring 65 and cause the squared openin 63 to engage with the squared lug 57. Vi hen this engagement is complete the positioning pin 68 willhave been entirely withdrawn from the opening 69 so that the key rod is free to be turned on its axs rearwardly. A forward turning of said key rod, it will be understood, will be prevented at this time by the stop 58,. As

the keyrod turned rearwardly, the mem-' her 52 will be rotatedrearwardly on its axis,

the rear side of, said member acting on the forward side of the vertically disposed body ortion of the lever'arm 41, forcing said ever arm rearwardly against the pull of the spring 49 and moving the point at which the actuating link 43,engages further from the fulcrum 44 of the operating lever. The

rezmward turning of the member 52 and the consequent relative movement between the two parts of the operating lever will con- "tinue until the engaging end 54 is seated in the notch 56 and the lower side of the member 52 is stopped by the projection or stop 59. If now the key rod be released, it will be restored to normal position by the spring 65.

and the pin 68 will during the restoring movement engage with the hole or opening 70 in the lug 61. It will be understood that by means of the pin 68 and the holes 69 and 2 70 the key rod is prevented, when in normal or disengaged position, from being accidentally turned on its axis. Vlliththe parts of the operating lever set as shown in Fig.2, said operating lever when actuated by the link 43 will raise or throw the vibrator to a less extent than before. this being so because,

while the extent ofmovement of the actuating linlc'43 is the same and its point of en- Y gagement with the lever arm 41 is the same,

i yet theshifting of the lever arm 41 haslengthened or increased the power arm of' the operating lever so that the pull of the link 43 isnt a greater distance from the fulcrum of said lever. The parts are so pro portionedthat this pull of the leverwill raise the vibrator only far enoughto present the upper field a of the ribbon'to the types,

so that the type impressions will follow a straight path longitudinal of said upper field a. \Nhen it s againdesiredto make use of the lower field b of the ribbon the key rod is pressed'in to engage with the square stud 57 and while so engaged is turned forwardly to rotate the interposed member'52 forwardly until it reaches the position shown in Figs. 1 and 3. During this movement it will be understood the spring 49 will draw the two parts of the operating lever together and will press the member 52 against the stop v It will be seen that by my invention I tprovide a two-part operating lever or extensible -member and means for varying a dimension of said member at will to change the widthwise portion of the ribbon resented to the types; that said extensible member is included in a train of devices for actuating the ribbon vibrator; that said member has two positive and unvarying p1votal points, namely, at the fulcrum screw 44 and at the pointwhere the link 43 engages the ear 42 on the rear arm 41; that by. effecting at will a relative movement between the two parts of the extensible member or leve'r the pivotal points are brought closer to or moved further from each other to vary' the throw or extent of movement of the vibrator from a single normal position so as to vary the widthwise portionof the ribbon pre-.

sented to the types; and that by this means the two-part operating lever is varied in len th at'will, the increase'or decrease being in tliepower arm of said lever, the load arm or the distance between the fulcrum and the vibrator remaining unchanged.

What I claim as new and desire to-secnre by Letters Patentfis 1. In a ribbon mechanism for writing machines, the combination of an extensible member operative to move the ribbon at printing operation and 'to control the throw thereof; and means for varying a dimension of saidmember predetermined extents to change at'will the widthwise portion of the ribbon presentedtogthe types.

I 2. In a ribbon mechanism for writing machines, the 'ciii'nbinat'ion of an extensible member for o'peratin the ribbonand controlling the extent a? operated-adjusting mechanism for varying a dimension of said member predetermined extents at will to change the widthwise porits throw; and'hand tion of a ribbon vibrator; a train of aetuat-' ing devices for said vibrator, said devices including a two-part member which controls the extent of throw of theribbon, each part having an unvarying pivotal connection;

and means for eifeeting at will predeter-' i'nined extents of relative-movement between the two parts of said member. to vary the widthwise portion of the ribbon presented to ing the two parts of said lever in one or the types. 1 i

5. In a ty ewriting machine, the combination of a ri bon vibrator; a two-part operatinglever therefor; and means for adjustanother of a plurality of predetermined relations to vary the length of said lever predetermined extents at will to alter the width wise portion of the ribbon presented to'the types, the points of connection of said lever remaining always the same.

6. In a typewriting machine, the combination of a ribbon vibrator having a single normal position; a two-part operating lever;

, and means for setting the two parts of said operating lever in one or anotherof a plurality. of predetermined relations so as to vary the length of said lever predetermined .means for adjusting said interposed member in one or another of a plurality of predetermined positions to set the two parts of said operating member in one or another of aplurality of predetermined relations.

8. In a typewriting machine, the combination of a ribbon vibrator; a two-part operating lever, one part being slidable on the other; a spring constantly tending to draw the parts together; an interposed member; and means for adjusting said interposed member at villto vary the relations between the two parts.

9. In a typewriting'machine, the combination of a ribbon vibrator; aItwo-part operating lever having a'fixed fulcrum; an actuating link having a single point of connec-' of said lever so as to move said link furtherfromor nearer to thefulcrum of said lever and thereby vary the throw of the ribbon vibrator.

10. In a typewriting machine, the combination of'a ribbon vibrator; a two-part lever for operating the same, one lever part being slidable on the other; a spring having a connection with each part; an interposed member pivoted to one lever part and engaging-the other lever part to hold it against the spring; and a hand device for setting or adjiisting the interposed member.

11. In a typewriting machine, the combination of a ribbon vibrator, and key actuated means for actuating the vibrator, said actuating means comprising a two part member, and means that extend outside of the machine for setting the parts of said member in predetermined relations. and increasing or decreasing the lengtlrof said two-part member predetermined extents.

12. In a ribbon mechanism for writing.

machines, the combination of a lever member operative to move the ribbon at rmting operation, means for varying a dimen-' sion of said lever member predetermined extents to change at will the widthwise portion of the ribbon presented to the types, and means for actuating said lever member-having an unvarying point of connection with said lever member.

13. In a typewriting machine, the combination of a ribbon vibrator, a train of actuating devices for said vibrator, said devices including a two-part lever member, each partof said member having an unvarying pivotal connection with other elements, and means for efi'ectingat will predetermined extents of relative movement between the two parts of said lever'member to vary the widthwise portion of the ribbon pre sented to the types.

Signed at the borough of Manhattan, city of New York, in the county of New York andState of New York, this 23d day of, Nov. A. D. 1906. r

MORRIS. w. rooL. 

